The drugs used for hypertension have good effects, mainly including the following categories. The first type is dihydropyridine calcium antagonists. The second group is alpha receptor blockers. The third category is angiotensin converting enzyme inhibitors. The fourth is angiotensin II receptor antagonists. The fifth category is diuretics. These kinds of drugs can have better hypotensive effect in combination with each other, such as angiotensin converting enzyme inhibitor, angiotensin II receptor antagonist in combination with diuretics, or calcium ion antagonist. The ideal antihypertensive drugs should be those with good antihypertensive effect, few or mild adverse reactions, convenient to take, and preferably inexpensive, but specific to each patient can not be generalized. For patients with slowly progressive hypertension, the selection of stepwise antihypertensive drugs should be the first choice, and has expanded from diuretics or beta blockers to include calcium channel antagonists, angiotensin converting enzyme inhibitors, and so on.